Anybody broken spark plugs on engines 2008 & after?
06-03-2010, 01:43 AM
#11
4th Gear Member
Join Date: Feb 2008
Location: Pensacola, Florida
Posts: 1,465
I've replaced the plugs in my '09 heads, with no issues at all. But to be fair, they were only in there for 500 miles. The stock ones were in there for 8k miles and removed with no issues. Heads were cold, too.
I used the NGK-equivalent of the 1-heat range colder FRPP plug, NGK 7554, ZNAR7AIX.
I used the NGK-equivalent of the 1-heat range colder FRPP plug, NGK 7554, ZNAR7AIX.
06-03-2010, 10:42 AM
#12
5th Gear Member
Join Date: May 2007
Location: Central Texas
Posts: 2,388
I have COPs that are from a '07, with the part number that starts with a "3". They are NOT the proper ones that come with the '08+ engines, which begin with a "8" I think. (The '09 engine I obtained did not have the COPs on them, so i had to find some.)
I've not had any issues using them, but would like to have the proper boots; the spring contacts the plug ok, but the boot itself is a little loose on the plug.
IIRC, the boots are black.
I've not had any issues using them, but would like to have the proper boots; the spring contacts the plug ok, but the boot itself is a little loose on the plug.
IIRC, the boots are black.
06-03-2010, 11:10 AM
#15
4th Gear Member
Join Date: Feb 2008
Location: Pensacola, Florida
Posts: 1,465
You will want the Champion 7989 plugs. Ford says the stockers are good for 100K, but I have never run spark plugs that long. You also have the risk of breaking some due to carbon buildup and the stock 2 piece plug problems. There are many threads on this issue. The reason why I want to know what heads I have because I don't know if my car has the old head/plug style.
06-03-2010, 11:18 AM
#16
4th Gear Member
Join Date: Jun 2009
Location: WA / TX
Posts: 1,085
There are two heads. They are marked on the driver's side valve cover with a giant white sticker with a bunch of numbers and the letters "AA" or "AB". I think the AA's are the two piece **** design, and the AB's are the revised. My 08 was build in mid 2007 and has the AA heads.
06-03-2010, 11:21 AM
#17
5th Gear Member
Join Date: Sep 2006
Posts: 3,401
Be careful Bro !!
06-03-2010, 11:31 AM
#18
4th Gear Member
Join Date: Feb 2008
Location: Pensacola, Florida
Posts: 1,465
There are two heads. They are marked on the driver's side valve cover with a giant white sticker with a bunch of numbers and the letters "AA" or "AB". I think the AA's are the two piece **** design, and the AB's are the revised. My 08 was build in mid 2007 and has the AA heads.
My car has the AB on the sticker and I am so relieved. I don't have to worry about the two piece plug failure now.
06-03-2010, 01:06 PM
#19
4th Gear Member
Join Date: Feb 2008
Location: Pensacola, Florida
Posts: 1,465
I also found this tidbit of information on FRPP website.
- 2008 engines with late style 12 mm spark plugs can be identified by coil engineering number 8L3E
- 2005-2008 engines with early style 16 mm "High Thread" design spark plugs can be identified by coil engineering number 3L3E part number
Last edited by Unleashedbeast; 06-03-2010 at 01:14 PM.
